Depending on what the sensors detect, the car might try to mitigate the driver's risk by cutting power to the motor or automatically stabilizing the vehicle.

WSJ: Designing a Car That Takes Your Pulse, Senses If You're Ill

But now, four years after Zimbabwe tied its currency to the dollar and a power-sharing coalition took control, stabilizing the economy and the government, Christensen and many others like him are starting to work again in the landscape they know best and love most.

WSJ: Walk With the Animals

As for the Arab world, the administration believes that since the Arabs oppose Iran's quest to become a regional nuclear power, they will help the US both in stabilizing Iraq and in preventing Iran from acquiring nuclear weapons.

CENTERFORSECURITYPOLICY: The long road to victory

The U.S. is a Pacific power, " he said, adding that Washington seeks to be a stabilizing presence in the region and that "the absence of a U.S. presence would be destabilizing.

WSJ: China: Cyberattacks Are Like Nuclear Bombs